Field Chickweed, Field Mouse-ear: Cerastium arvense ssp. strictum (Synonyms: Cerastium arvense ssp. maximum, Cerastium viride)
Bering Chickweed, Bering Mouse-ear Chickweed: Cerastium beeringianum (Synonyms: Cerastium alpinum var. beeringianum, Cerastium alpinum var. capillare, Cerastium beeringianum var. capillare, Cerastium beeringianum var. glabratum, Cerastium beeringianum var. grandiflorum, Cerastium earlei, Cerastium fischerianum var. beeringianum, Cerastium pilosum, Cerastium pulchellum, Cerastium scammamiae, Cerastium variabile, Cerastium vulgatum var. beeringianum)
Beautiful Sandwort, Slender Mountain Sandwort: Eremogone capillaris var. capillaris (Synonyms: Arenaria capillaris var. nardifolia, Arenaria formosa)
Arctic Sandwort, Arctic Stitchwort: Minuartia arctica (Synonyms: Alsine arctica, Arenaria arctica, Lidia arctica)
Rock Stitchwort: Minuartia dawsonensis (Synonyms: Alsinopsis dawsonensis, Arenaria dawsonensis, Arenaria litorea, Arenaria stricta var. dawsonensis, Arenaria stricta var. litorea, Minuartia litorea, Sabulina dawsonensis)
Elegant Stitchwort: Minuartia elegans (Synonyms: Alsinanthe elegans, Arenaria elegans, Arenaria rossii ssp. columbiana, Arenaria rossii var. columbiana, Arenaria rossii ssp. elegans, Arenaria rossii var. elegans, Minuartia rossii ssp. elegans, Minuartia rossii var. elegans)
Large-fruited Sandwort, Long-pod Stitchwort: Minuartia macrocarpa (Synonyms: Alsinopsis macrocarpa, Arenaria macrocarpa, Wierzbickia macrocarpa)
Ross's Sandwort: Minuartia rossii (Synonyms: Alsinanthe rossii, Alsinopsis rossii, Arenaria rossii, Arenaria rossii var. apetala, Minuartia orthotrichoides, Minuartia rolfii, Minuartia rossii var. orthotrichoides)
Beautiful Sandwort, Boreal Sandwort, Reddish Sandwort: Minuartia rubella (Synonyms: Alsine rubella, Alsine hirta var. rubella, Arenaria propinqua, Arenaria rubella, Arenaria verna var. propinqua, Arenaria verna var. pubescens, Arenaria verna var. rubella, Tryphane rubella)
Slender Sandwort, Slender Stitchwort: Minuartia tenella (Synonyms: Alsinopsis tenella, Arenaria macra, Arenaria stricta, Arenaria stricta ssp. macra, Arenaria stricta var. puberulenta, Greniera tenella)
Yukon Stitchwort: Minuartia yukonensis (Synonyms: Arenaria laricifolia var. hultenii, Lidia yukonensis)
Bluntleaf Sandwort, Blunt-leaved Sandwort: Moehringia lateriflora (Synonyms: Arenaria lateriflora, Arenaria lateriflora var. angustifolia, Arenaria lateriflora var. tayloriae)
Snow Pearlwort: Sagina nivalis (Synonyms: Sagina intermedia, Spergularia intermedia, Spergularia saginoides var. nivalis)
Cushion Pink, Moss Campion: Silene acaulis (Synonyms: Cucubalus acaulis, Silene acaulis ssp. arctica, Silene acaulis ssp. exscapa, Silene acaulis ssp. subacaulescens, Silene exscapa, Xamilensis acaulis)
Arctic Catchfly, Arctic Lychnis: Silene involucrata ssp. involucrata (Synonyms: Gastrolychnis affinis, Gastrolychnis involucrata, Gastrolychnis involucrata ssp. elatior, Lychnis affinis, Lychnis apetala var. elatior, Lychnis brachycalyx, Lychnis furcata, Lychnis furcata ssp. elatior, Lychnis triflora var. elatiorMelandrium affine, Melandrium affine var. brachycalyx, Melandrium furcatum, Silene furcata, Silene involucrata ssp. elatior)
Taimyr Catchfly: Silene ostenfeldii (Synonyms: Gastrolychnis ostenfeldii, Gastrolychnis taimyrensis, Gastrolychnis triflora ssp. dawsonii, Lychnis dawsonii, Lychnis. ostenfeldii, Lychnis taimyrense, Lychnis triflora ssp. dawsonii, Lychnis triflora var. dawsonii, Melandrium dawsonii, Melandrium ostenfeldii)
Pink Campion: Silene repens (Synonyms: Silene purpurata, Silene repens ssp. australis, Silene repens var. australis, Silene repens var. costata, Silene repens ssp. purpurata)
Catchfly: Silene soczavana (What is its synonym?)
Nodding Campion, Nodding Lychnis: Silene uralensis ssp. uralensis (Synonyms: Gastrolychnis apetala ssp. arctica, Lychnis apetalassp. arctica, Lychnis apetalavar. arcticaLychnis apetala ssp. attenuata, Lychnis apetala var. attenuata, Lychnis apetala var. glabra, Lychnis apetala var. nutans, Lychnis attenuata, Lychnis nesophila, Lychnis soczavianum, Melandrium apetalum ssp. arcticum, Melandrium apetalum ssp. attenuatum, Melandrium apetalum var. glabrum, Silene attenuata, Silene uralensis ssp. arctica, Silene uralensis ssp. attenuata, Silene uralensis var. mollis, Silene wahlbergella ssp. arctica, Silene wahlbergella ssp. attenuata, Wahlbergella attenuata)
William's Catchfly: Silene williamsii (Synonyms: Silene menziesii ssp. williamsii, Silene menziesii var. williamsii)
Alaska Starwort: Stellaria alaskana
Boreal Starwort: Stellaria borealis ssp. borealis (Synonyms: Spergulastrum lanceolatum, Stellaria borealis var. floribunda, Stellaria borealis var. isophylla, Stellaria calycantha var. floribunda, Stellaria calycantha ssp. interior, Stellaria calycantha var. isophylla, Stellaria calycantha var. latioflia, Stellaria calycantha var. laurentiana)
Sitka Starwort: Stellaria borealis ssp. sitchana (Synonyms: Alsine bongardiana, Stellaria borealis ssp. bongardiana, Stellaria borealis var. bongardiana, Stellaria borealis var. sitchana, Stellaria calycantha var. bongardiana, Stellaria calycantha var. sitchana, Stellaria sitchana, Stellaria sitchana var. bongardiana)
Northern Starwort: Stellaria calycantha (Synonyms: Alsine calycantha, Alsine simcoei, Arenaria calycantha, Stellaria borealis var. simcoei, Stellaria calycantha var. simcoei, Stellaria simcoei)
Chamisso's Starwort, Matted Sandwort: Stellaria dicranoides (Synonym: Arenaria chamissonis, Arenaria dicranoides, Cherleria dicranoides)
Longleaf Starwort, Longleaved Starwort: Stellaria longifolia (Synonyms: Alsine longifolia, Stellaria atrata, Stellaria atrata var. eciliata, Stellaria diffusa, Stellaria longifolia var. atrata, Stellaria longifolia var. eciliata)
Goldie's Starwort, Long-leaved Starwort, Longstalk Starwort: Stellaria longipes ssp. longipes (Synonyms: Alsine palmeri Rydberg; Alsine strictiflora, Alsine validus, Silene ciliatosepala, Silene crassipes, Silene dulcis, Silene edwardsii, Silene edwardsii var. arctica, Silene edwardsii var. crassipes, Silene hultenii, Silene laeta, Silene laeta var. altocaulis, Silene laxmannii, Silene longifolia var. laeta, Silene longipes var. altocaulis, Silene longipes var. edwardsii, Silene longipes var. laeta, Silene longipes var. minor, Silene longipes ssp. monantha, Silene longipes var. monantha, Silene longipes ssp. stricta, Silene longipes var. subvestita, Silene monantha, Silene monantha var. altocaulis, Silene monantha ssp. atlantica, S. monantha var. atlantica, Silene palmeri, Silene stricta, Silene subvestita, Silene valida, Stellaria arctica)
Umbellate Starwort, Umbrella Starwort: Stellaria umbellata (Synonyms: Alsine baicalensis, Stellaria gonomischa, Stellaria weberi) ?
Merckia: Wilhelmsia physodes (Synonyms: Arenaria physodes, Merckia physodes)